Martin Stone Davis wrote:
I don't think this is a major problem. If the author realized this was happening, the same document (essentially) could always be inserted at multiple places in the keyspace.
A good target document for censoring would be the manifest of a DBR-freesite.
The key of the next edition is predetermined. The attacker even can guess the
time, when the key will be inserted (and maybe verified). The readers will
think the freesite just was not inserted, when it does not load.
Okay, so the attacker could censor the current edition. But he wouldn't be able to censor all of them, since they are distributed throughout the keyspace. The reader could then just click to retrieve one of the previous day's (or week's) editions. The fred interface might be designed to make this even easier, if that becomes a problem.
It would be impractical for the author to insert the manifest under a
different key (= at another place in the keyspace), because it will break the
bookmarks of his readers.If there is a well-known index of new freesites, then
the attacker will read it too and try to censor the new site as well.
-- Thomas Leske
-Martin
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